Syrian zinc-coated cable tray specifications

Zinc-coated cable trays are typically hot-dip galvanized carbon steel with a minimum coating thickness of 0.065 mm (65 µm) and designed to meet corrosion resistance and structural standards suitable for harsh environments.Material and CoatingBase Material: Carbon steel is commonly used for cable trays, providing strength and durability. Aluminum may be used for outdoor applications .Galvanization: Hot-dip galvanization is the preferred method, forming a thick zinc-iron alloy layer with excellent adhesion and corrosion resistance, suitable for outdoor, industrial, or coastal environments .Zinc Coating Thickness: Minimum 0.065 mm (65 µm) per side, equivalent to 460 g/m² per side, ensuring long-term protection against corrosion .Electro-galvanized Option: Provides a thinner, uniform zinc layer but offers lower corrosion resistance, generally used for indoor or less aggressive environments .Repair and Protection: Any cuts or damaged areas must be treated with compatible zinc-rich compounds to maintain coating integrity. Junctions of dissimilar metals require corrosion-inhibiting compounds to prevent galvanic corrosion .Tray Types and DimensionsLadder Type: Two longitudinal side rails connected by transverse rungs. Standard rung spacing is 150 mm, adjustable to 225 mm or 300 mm depending on cable load .Trough Type: Prefabricated structure with ventilated or perforated bottom, width greater than 102 mm, with integral or separate side rails .Sheet Thickness: Side and base plates typically range from 1.5 mm to 3 mm; heavier supports may exceed 3 mm .Standard Lengths: Commonly 3 m, with optional 6 m lengths available .Environmental SuitabilityIndoor/Outdoor Use: Hot-dip galvanized trays are suitable for outdoor and corrosive environments. Aluminum trays are anodized for outdoor use .Severe Conditions: For highly alkaline or acidic environments, hot-dip galvanization is mandatory .Special Coatings: ZM (Zinc-Magnesium) coatings offer similar corrosion protection to hot-dip galvanization with additional environmental benefits and faster lead times .Standards and ComplianceASTM A123/A123M: Hot-dip galvanization standard for coating thickness and adhesion .GB/T 13912-2020: Specifies hot-dip galvanized coatings on fabricated steel, including local thickness and mean coating mass .NEMA VE-1: Defines ladder tray rung spacing and structural requirements .BS EN 10346: Applicable for ZM-coated trays . These specifications ensure that zinc-coated cable trays used in Syria or similar regions provide durable, corrosion-resistant, and structurally sound solutions for electrical cable management in industrial, commercial, and outdoor installations.